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Finding the Fourth Proportional to 14,750.88, 20,358.84 and 8,786

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Solution

The fourth proportional to 14,750.88, 20,358.84 and 8,786 is: 12,126.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,750.88 : 20,358.84 = 8,786 : x
  2. Step 2: Convert to fraction form
    14,750.88/20,358.84 = 8,786/x
  3. Step 3: Cross multiply
    14,750.88x = 20,358.84 × 8,786
  4. Step 4: Simplify right side
    14,750.88x = 178,872,768.24
  5. Step 5: Solve for x
    x = 178,872,768.24/14,750.88
  6. Step 6: Final answer
    x = 12,126.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.